chore: Move private packages to internal (#1664)

internal/utils/collector.go

@@ -0,0 +1,37 @@
+//go:build windows
+
+package utils
+
+import (
+	"os"
+	"strings"
+
+	"github.com/prometheus-community/windows_exporter/internal/types"
+)
+
+func ExpandEnabledCollectors(enabled string) []string {
+	expanded := strings.ReplaceAll(enabled, types.DefaultCollectorsPlaceholder, types.DefaultCollectors)
+	separated := strings.Split(expanded, ",")
+	unique := map[string]bool{}
+
+	for _, s := range separated {
+		if s != "" {
+			unique[s] = true
+		}
+	}
+
+	result := make([]string, 0, len(unique))
+	for s := range unique {
+		result = append(result, s)
+	}
+
+	return result
+}
+
+func PDHEnabled() bool {
+	if v, ok := os.LookupEnv("WINDOWS_EXPORTER_PERF_COUNTERS_ENGINE"); ok && v == "pdh" {
+		return true
+	}
+
+	return false
+}